Check engine
If the car runs and feels normal, you can drive it. Get it scanned soon so a small problem stays small.
1What it usually is
The engine computer saw a fault and saved a code. Common causes are a loose gas cap, an oxygen sensor, a small EVAP leak or a light misfire.
2Try first
Tighten the gas cap until it clicks. The light can take a few days of driving to go off.